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xen-devel
RE: [Xen-devel] AFS-based VBD backend
> > The blocktap backend driver is what you want. I'm not sure of it's
> > current state, but the plan is to enable you to terminate a
> blk device
> > channel in user-space.
>
> Cool! Where was the most recent version of that?
Unstable tree, but probably works in 2.0 too.
> > Of course, you could use 'unfsd -r' and export your AFS root file
> > systems via same-machine NFS. This works pretty well, but I
> can't say
> > I've hammered it.
>
> I'm one of the folks who ran into the NFS root hangs early on
> -- trying very hard to get off of it, hence this messing
> about with alternatives.
> Granted, I'm not using same-machine NFS, don't know how much
> that would reduce the hangs.
Do you still see hangs with 2.6.9 kernels?
> One variation on that theme that I have tested is an enbd
> server running on an AFS client, serving block devices to
> dom0 on another machine. ;-) Slow, but seems stable.
> Haven't tried same-machine with that either, because it eats
> about 30% CPU on the enbd server under load.
We use redhat gnbd in preference to enbd.
Ian
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